You’ll want, at a minimum:
CONFIG_I2C_HID_ACPI
CONFIG_I2C_DESIGNWARE_CORE
CONFIG_I2C_DESIGNWARE_PLATFORM
CONFIG_HID_MULTITOUCH
EDIT: Sorry, I hit send too early.
I2C_HID_ACPI allows I2C HID devices to be detected by reading ACPI tables.
The I2C controller connected to the touchpad seems to be a Synopsys Designware (thus the DESIGNWARE symbols).
HID_MULTITOUCH is the actual event driver that produces input messages from the HID reports.